Subterranea

Maybe the best Defender-Clone on this System. Even more Fun than Chopper Command!Sadly, no one seems to know about this Game's existence!Funny, that the Game begins with a "Boss-Fight" and then starts with the "regular" Game... An underrated and unknown Classic!

At the start of the 3rd stage, shoot all of the Aerobots that the Hexuplex sends at you, but when the Treasure Crystal appears don’t touch it. Instead shoot the crystal exactly 33 times. It will change into the initials MK (for Mark Klein). If you shoot it more than 33 times it will change back into a crystal, but you can get the initials to reappear on every 256th shot after that.